Warren Buffett

Warren Buffett, chairman of Berkshire Hathaway Inc., years ago famously promised to give most of his net worth to the Gates Foundation. He has made clear that his children aren't getting his money for personal use. For his recent birthday in August, the Giving Pledge co-founder pledged more money to each of his three children's philanthropic foundations; eldest son's Howard G. Buffett Foundation now controls $2 billion, which it directs toward basic needs in developing countries.